Driving-gear for vehicles.



E. BYARS. DRIVING GEAR FOR VEHICLES.

APPLICATION FILED DEC. 1, 1909.

Patented Aug. 23, 1910.

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DRIVING GEAR FOE VEHICLES.

A PPLIOATION TILED DEG.1. 1909.

Patented Aug. 23, 1910.

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E. BYARS.

DRIVING GEAR FOR VEHICLES.

APPLIOATIOE FILED DEO.1, 1909.

Patented Aug. 23, 1910.

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EDGAR BYARS, 01F AMARILLO, TEXAS.

DRIVING-Gian eon VEHICLES. a

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Vehicles, of which the following is a specification.

, My invention relates to driving gear for vehicles and moreparticularly driving and transmission gear for motor vehicles, and theobject is to provide gearing for increasing the speed of the vehiclewithout increasing the speed of the motor and also for decreasing thespeed of the vehicle and gaining power by back and direct gearing. Attimes all the power of the motor is not needed. In such cases I haveprovided means for decreasing the speed of the motor and at the sametime increasing the speed of the vehicle. Thisis accomplished by makingthe transmission of power direct, transmitting throughonly one gear toobtain the various speeds. -The speed is increased and yet the power isdecreased and vice versa. 'A plurality of driving wheels are providedfor the rear axle of vehicles which are provided with a shaft drive. Invehicles which are provided with a double chain drive, the improvedgearing-is applied to the jack or counter shaft. The advantage is thatthe wear on the motor is greatly decreased when making high speed. Therewill be less vibrations of the motor and less danger of breaking themotor or any other part of the vehicle and the vehicle will move moreevenly or smoothly. A high speed may be obtained with the engine ormotor shaft running about two and one-half times while the axle runs orturns once. Where greater power is needed, a gearing is used which willmake about three and one-half turns while the axle turns once. Inextreme cases,

where greater power is required a gearing may be used with which themotor or engine shaft will turn about five times while the axle turnsonce. In vehicles which are provided with double chain drive thevariation can he still greater because there is greater spaceforclearance. s

The improved gearing may be used for driving either solid shattsorshafts provided with differential gearing, but the improved gearing isherein claimed for driving a shaft Specification of Letters Patent.Application filed; December 1, 1909. Serial No. 530,846.

Patented Aug. 23, 1910.

and not in combination with differential gearing.

; Other objects and advantages will be fully explained in the followingdescription and the invention willbe more particularly pointed out inthe claims.

Reference is had to the accompanying drawings which form a part of thisapplication and specification.

F igure'l is a broken sectional view of the housing and the gearing.Fig. 2 is a section, taken substantially on the line w-a; of Fig. 1.Fig. 3 is a sectional view, showing a variation from the mechanism shownin Figs. 1 and 2. Fig. 4 is a detail view of the gear-shiftingmechanism, this being a variation from the mechanism shown in Figs. 1and 2. Fig. 5 is a detail view of the mechanism shown in Figs. 1 and 2.Fig. 6 is a detail view of the gear shifting mechanism shown in Figs. 1and 2. Fig. 7 is a detail view of the locking block shown in Fig. 4.Fig. 8 -is a detail view of the cog wheel 35 shown in Fig. 3. Fig. 9 isa variation of the block shifting pinion 28, shown in Fig. 5.

' Similar characters of reference are used to indicate the same partsthroughout the several views.

The improved gearing is provided with a locking head 1 which is mountedon the rear axle in those Vehicles which are provided with a shaftdrive. This axle may comprise an inner shaft 2' terminating at thedifi'erential gear, and an outer hollow shaft or sleeve 2 to which isrigidly secured the differential housing 30, and the locking head 1.This head carries locking plungers for engaging gear wheels. In thedrawings are shown a high speed cog wheel 3, a low speed cog Wheel 5,and a cog wheel 4. for intermediate speed, each adapted to runindependently of each other. Means are provided for lockin any one ofthese wheels to, the shaft 2. 'The head 1 is rigid with the shaft 2,that portion of the shaft on which the head is mounted being square incross-section and the opening in the head being square in cross-section.Any one of the cog wheels 3, 4, or 5 may be locked to the head 1. Thiswill make the cog-wheel rigid with the shaft 2. A series of lockingplunger-s6 are mountin the head l-for locking the wheel 3 in operativeposition. A grooved collar 7 is slidably mounted on the sleeve 8 of thehousing 9. Each plunger 6 has an arm 10 which engages the groove in thecollar 7. The gear wheel 4 is mounted concentrically with wheel 3 andheld in axial alinement by a shoulder 11. The wheel 3 is held inposition by the head 1 and the bearin 12 which is held [in place by thehousin 9, eing a part there of pinions 17, 18, and 19 are provided fordriving the cogs 3, 4, and 5. The pinions 17 18, and 19 are rigid-withthe propeller or drive shaft (not shown). .The wheel 3 is locked to thehead 1 by an axial movement of the plungers 6 which may be efiected byany suitable lever which engages the collar head 37 similar to head 1 isused.

7. When wheel 3 is locked to the head 1, the vehicle is driven by thepinion 17. The wheels 4 and 5 are locked to the head 1 by separatelocking plungers 20 and 21 which are mounted in the head 1. Theseplungers 20 and' 21 have integral racks 22 which are engaged by anelongated pinion 23 which is mounted on the shaft 24. Shaft 24 is drivenby a second pinion 25. Pinion 25 is driven by a rack 26 which has arms27 which engage the collar 28, bein attached to the ring 29 which ringis move whenever the collar 28 is shifted. The collar 28 is axiallymovable on the axle 2 and may be moved by any suitable lever. It isapparent that moving the collar 28 in one direction will drive one ofthe racks on plungers 20 and 21 in one direction and that moving thecollar in the opposite direct-ion will move the other rack. l/Vith themechanism thus described either wheel 4 or 5 can be locked to thehead 1. The drawings show the usual differential, the housing of whichis indicated in the drawings by the numeral 30. A reversing gear wheel31 is provided and this may be thrown in or out of gear by a collar 33and arms 32 and the collar 33 may be moved by any suitable lever. Thearms 32 lock the wheel 31-to the housing of the differential in the samemanner thatwheel 3 is locked to the head 1.

'Fig. 3 shows a variation in the gearing and the shifting mechanismtherefor. A A cog wheel 34 similar to high speed wheel 3 is driven bypinion 17. The intermediate wheel 35 is similar to wheel 4, but it isdifferently mounted. "Wheel 35 is mounted concentrically relative towheel 34 but is mounted on a bearing 38 which is integral with head 37.The wheel 36 is mounted concentrically relative to wheels 34 and andon abearing 39 which is integral with heady37. The means for locking thewheels 34, 35, and 36 to the head 37 consists in a lever 40 which isfulcrumed on the head 37 and which has a plurality of locking arms 41,42, and 43. The wheel 34 has a series of recesses 44 therein and the arm41- is adapted to enter any one of these recesses for the purpose oflocking this wheel to the head 37. The wheel 35 has an annular flange 45which has recesses to receive the arm 42 tor the urpose of locking thewheel 35 to the hea 37.

The wheel 36 has recesses 46 therein adapted to receive the arm 43 forlocking the wheel 36 to the-head 37. The lever 40 is actuated by acollar 47 which is slidably mounted on the sleeve 8. Any movement of,the collar 47 will affect the lever 40. The collar 47 has a deep groovetherein and the lever has a'bearing 48 which engages this groove. Thecol- 'lar can be moved to lock any one of the wheels 34, 35, or 36 to-the head 37.

Another variation is shown in Fig; 4. Cog wheels 49, 50, and 51, similarto wheels 3, 4, and 5, are adapted to be driven by the pinions 17, 18,and 195 A different locking means is rovided and mounted in a head 52which is similar to head 1. The wheels 49, 50, and 51 arelocked to thehead 52 by a sliding block 53 which operates in a slot in the head 52.This block 53 has a rack 54 on one side and this rack is to be actuatedby a pinion 55. This inion is actuated by a rack 56 which has a ug to beengaged by the collar 7. The wheel 51 is locked to the head by a lug 57.The wheel 51 has a face rack similar to the rack 45 and the lug 57 isadapted to engage this rack at any point. The wheel 50 is locked to thehead 52 by moving the block 53 until the lug 57 passes out of the rackon the wheel 51 and moves into a similar rack 58 on wheel 50. On afurther movement inwardly the lug 59 on the block 53 will lock the wheel49 to the head 52, by engaging a rack 60 which. is simi' lar to the rack45. Any movement of the collar 7 will effect a movement of the block 53.

Instead of a rack and pinion for moving blocks 20 and 21, a double crank61 may be mounted on shaft 24 .and made to engage pins 62 which areinserted in the blocks 20 and 21, the crank 61 having elongated slotsfor the pins 62. See Fig. 9. Anti-friction the cog wheels are at alltimes concentric with each other and running whenever the pinions arerunning. The vehicle Wlll be driven only when one of the cog wheelslocked to the locking head 1 which is rigid with the shaft 2, beingmounted on a square portion of the shaft, the dotted outline of thissquare portion being indicated n Fig. 2.

Having fully 'descrlbed my invention what I claim is new and desire tosecure by Letters Patent is 1. A driving gear for vehicles provided witha driving shaft and a driven shaft; a series of pinions rigid with saiddriving shaft, a locking head rigid with said driven shaft, a series ofcog wheels loosely mounted on said driven shaft, a locking bolt for eachcog wheel mounted in said locking head, and bolt throwing membersconstantly connected to said bolts for selectively recip- 'rocatin'gsaid locking bolts for locking any one of said gear wheels to saidlocking head.

2. A driving ear for vehicles provided with a driving sl iaft and adriven shaft; a series of pinions rigid with said driving shaft, aseries of cog wheels concentric with each other and driven by saidpinion, a lock ing head, a sliding bolt for each cog wheel mounted insaid locking head, and bolt shifting members for such bolts constantlyconnected thereto for selectively reciprocat. ing any one of saidlocking bolts to lock one of said cog wheels to said locking head.-

3. A driving gear for vehicles provided with a driving shaft and adriven shaft; a housing, hearings in said housing for said fishafts, aseries of pinions rigid with said driving shaft, a series of cog wheels,each having a pair of recesses therein, a locking head rigid with said;driven shaft, pairs of locking bolts mounted in said locking head andbolt throwingrnembers constantly in engagement with said bolts forreciprocating one pair of said locking bolts at a time? into therecesses of one of said cog wheels.

4. A driving gear for vehicles provided with a driving shaft and adriven shaft; a housing and bearings therein for said shafts, a seriesof pinions rigid with said driving shaft, a high speed cog wheel looselymounted on said driven shaft and meshing with one of said pinions, anintermediate speed cog wheel mounted loosely on said high speed cogwheel and adapted to mesh with another one of said pinions, a low speedcog Wheel mounted loosely on said intermediate speed cog wheel andadapted to mesh with one of said pinions, said cog wheels having meanson their peripheries for holding the same concentric with each other, alocking head, sliding bolts carried thereby, and means for selectivelyshifting said sliding bolts for locking any one of said cog wheels tosaid locking head.

5. A driving gear for vehicles provided driven shaft havinga squareportion, a locking head rigid with said driven shaft and mounted on thesquare portion thereof, a

series of pinions rigid with said driving shaft, a series of cog wheelsmounted loosely about said driven shaft, the inner cog wheel beingloosely mounted on said shaft and each outer cog wheel being mounted onthe periphery of the adjacent inner cog wheel, and 'said' cog wheelsrunning wholly outside of said locking head and concentric with eachother, pairs of sliding bolts mounted in said lockin portions of saidshaft and inclosing said pinions and said cog wheels and said lockinghead and carrying bearings for said shaft, and means for shifting anyone of the pairs of sliding bolts for locking any one of said cog wheelsto said locking head.

6. A vehicle driving gear provided with a' driving shaft and a drivenshaft; a housing provided with bearings for said shafts, a series ofpinions rigid with said driving shaft within said housing, a series ofcog wheels mounted loosely Within said housing concentric with eachother and having recesses in the faces thereof, a locking head rigidwith said driven shaft, pairs of sliding bolts corresponding to therecesses in said cog wheels "mounted in said locking head,

said housing having an interior sleeve abutting a ainst said lockinghead, collars mounted thereon and connections between said colon saidsleeve and movable axially.

head, a housing inclosing lars and said-sliding bolts whereby any pairof said slidin bolts may be moved.

7 A vehice gearing provided with a driving shaft and a driven shaft; ahousing inclosing portions of said shafts and having interior projectingsleeves, roller bearin s" mounted within said sleeves about said drivenshaft, a bearing for said driving shaft mounted on said driven shaft, aseries of pinions rigid With said driving shaft, a disk-shaped lockinghead mounted on said driven shaft, a'series of cog wheels adapted tomesh with said pinions mounted loosely on said driven shaft between saidlockin head and said driving shaft bearing, said cog wheels having theirback faces running in a plane parallel to the adjacent face of saidlocking head, means for locking any one of said cog wheels to saidlocking head, a reverse gear loosely mounted on said driven shaft, andmeans for locking said reverse gear rigid with said driven shaft.

8. A vehicledriving gear provided with a driving shaft and a drivenshaft; a diskshaped locking head rigid with said driven shaft, a seriesof pinions rigid with said driving shaft, a series of cog Wheels mountedloosely about said driven shaft. wholly outside of said locking head andconcentric with each other and having pairs of recesses;

eases";

therein, said cog Wheels having means on In testimony whereof, IE: setmy hand in their eri heries for 110151111 the same conthe aresence *twaWitnesses this 9 1mb da 10.

centric Wlth each other, pairs of locking of November, 1909, boltsmount-ed 111 said iockmg head, means i I I K "i 'V'" 1 for shiftinganypair of said locking bolts ELGAR bylmmb' into the recesses of any oneof seld cog Witnesses:

Wheels, and a side thrust bearing Wheel to J, W. 53mm,

prevent displacement ofisaid locking head. L. Jsczzsmq,

